Hi All, We are facing a vfio issue on qemu 2.5. Really appreciate any help or pointers. Details are as below: We are using qemu 2.5 compiled out of git commit 0b0571dd246871f18b7d64b5279511e91e2a7bf6 and are using Linux Kernel 3.18.19 for both host and the VM. We are also using KVM VM with pci-assign'ed SRIOV VF interfaces. The issue happens once in a while when a running VM is rebooted. On boot, the VM hits the following error and stops. qemu-system-x86_64: -device vfio-pci,host=04:00.7,id=hostdev2,bus=pci.0,addr=0x9: vfio: failed to set iommu for container: Bad address qemu-system-x86_64: -device vfio-pci,host=04:00.7,id=hostdev2,bus=pci.0,addr=0x9: vfio: failed to setup container for group 40 qemu-system-x86_64: -device vfio-pci,host=04:00.7,id=hostdev2,bus=pci.0,addr=0x9: vfio: failed to get group 40 qemu-system-x86_64: -device vfio-pci,host=04:00.7,id=hostdev2,bus=pci.0,addr=0x9: Device initialization failed Strange thing is, once this error is hit, no further VMs can be spawned on the host and all of them run into the same problem. However a reboot of the host appears to solve the issue. I have attached the relevant logs. Regards, Goutham.
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vfio_issue.tgz
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